Improvement in side-wall ventilators



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Side-Wall Ventilator. l N0.l64, 636. Patentedlun. e22,l875.

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UNITED STATES PATENT OFFICE.

XVILLIAM Gr. OREAMER, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN SIDE-WALL VENTILATORS.

Specification forming part of Letters Patent No. 164,696, dated June 22,1875; application filed November 17, 1874.

To all whom it may concern:

Be it known that I, WILLIAM G. GREAMER, of the city of Brooklyn, in thecounty of Kings and State of New York, have invented Improvements inSide-Wall Ventilatoi-s, of which the following is a specification:

The object of my improvement is to construct an effective form ofventilator, mainly for the sides of railroad-cars and boats, that shallbe:stationary in all its parts, and which, by the movement of the car orboat to which it may be attached, and the passage of a current of airthrough the aperture in either direction, or when the car is stationaryand the wind blowing at right angles with the side of the car or boat,shall produce an outward current from the inside of the car or boat.

I invented and patentedin 1861 an automatic ventilator for this purpose,the deflector of which was movable and changed its position by thechange of movement in the train. This movable deflector is objected toby some, in consequence of the noise that it makes, and which I havebeen unable to stop entirely.

My present invention accomplishes the same results, and all its partsare stationary, and at the same time it does not obstruct the draft ofthetrain at high speeds or against strong winds, as many of theventilatingboxes do that have been attached to the sides of cars.

Figure 1, in the accompanying drawing, shows a horizontal plan ofarrangement of inside deflectors B O and outside deflectors J K, withthe opening A to inside of car. Fig. 2 shows a vertical end view. Fig. 3shows an oblique perspective view, the letters of reference being thesame in all views.

In Fig. 1, A is an opening in the side of the car. B O are stationarydeflectors .of sheet metal attached to the sides of the opening. Thesedeflectors are covered with a casing of sheet metal at the top, bottom,and in part of the aperture, as shown at D E and F G. The ends of thiscovering H I are open, the air passing through with the utmost freedom,and

by deflection and induction causing an exhausting current from theinside of the car when it is in motion.

When the ear is stationary, and the wind blowing at right angles, itstrikes against the outer casing J K, glancing off each way, causing anoutward current from the opening A.

If the car is stationaryand there is no wind, the apertures being large,ventilation by natural expansion is not obstructed in the least.

No amount of wind or rain in any direction can go inward through theopening.

The advantages of this ventilation over any other are as follows: First,it is noiseless at all times. Second, with a side Wind, the rain or windwill not blow in from the inclination of the roof, as is the case withsome form of boxes attached to the sides of the raised roof and open atthe bottom. Third, the angular plate J K, covering the deflectors,accomplishes two purposes-namely, when the wind is blowin g at rightangles it causes an outward current, and when the current is passingthrough and strikes the deflectors the angular shape inside, inadditionto the deflection, produces an inducing current outward. Fourth,when the car is stationary and the ventilation produced only by naturalexpansion, the opening is so large that no obstruction prevents the freeescape of air. Fifth, this form offers the least possible obstruction tothe draft of the car by the air passing through freely. Sixth, placed insuccession, (as they are,) and the air passing through freely, they areall equally efl'eotive. This is not the case with the boxes'open at thebottom.

I claim as my invention- The two side deflectors, with the coveringtopand bottom, in connection with outer deflecting covering, substantiallyas shown.

WILLIAM G. OREAMER.

Witnesses:

GILBERT L. MILES, THOMAS J. SARRAR, Jr.

